210 CONTRIBUTIOKS TO NORTH AMERICAN ICHTHYOLOGY IV. 



width. Dorsal fin slightly behind ventrals, nearer caudal than muzzle. 

 Lateral line in the young running about half way to caudal, nearly com- 

 plete, or wanting on some scales only in the adult. Olivaceous; a dark 

 lateral band ; dark shades along the back ; males with the loral region 

 and the bases of all the fins except the dorsal scarlet. Head 4^; depth 

 6. D. 8; A. 7; scales 10-60-11; teeth 1,4-4, 1. L. 4 inches. Utah 

 to California ; very abundant in rock-pools. 



(Cope, Haydeu's Geol. Surv. Mont. 1871, 47:i : Jordan & Henshaw, Rept. Chief Eng. 

 U. S. Geog. Surv. W. lOOth Mer. 1878, 191.) 



321. A. nubila. (Grd.) Jor. & Gilb. 



This species is very similar to A. carringtoni, but in Girard's original 

 types the head is quite slender, while in the latter species it is blunt 

 and stout. Lateral Hue continuous, but broken and feeble posteriorly. 

 Body stout. Mouth small, barbels small. Fins rather small. Color 

 blackish, with a darker lateral shade. Head black above. Head 4| ; 

 depth 41^. D. 8 ; A. 7 ; Lat. 1. 60. L. 4 inches. Washington Territory. 



{Artjyreus nubilas Girard, Proc. Acad. Nat. Sci. Phila. 1856, 186 : Argyreus nuhilus 

 Girard, U. S. Pac. K. R. Surv. x, 244.) 



382. A. vuSnerata Cope. 



Body elongate. iViuzzle obtuse, not projecting. Mouth inferior, hor- 

 izontal, maxillary not reaching Line of orbit. Eye as long as muzzle, 4 

 in head. Dorsa| fin behind line of ventrals, nearer caudal than snout. 

 Barbels small. Olivaceous; yellow below; a blackish lateral band; 

 head blackish above; males with the chin rtd. Head 4i; depth 5i. 

 D. 8 ; A. 7 ; scales 12-05-12 ; teeth 1, 4-4, 1. L. 2i inches. Utah to Cal- 

 ifornia, Oregon, and Arizona; generally abundant in the mountain re- 

 gion. 



(Cope, Hayden's Geol. Surv. Mont. 1871, 473 ; Cope, vol. v, Zool. U. S. Geog. Surv. 

 W. lOOth Mer. 1876, 646; Jordan & Henshaw, Rept. Chief Eng. U. S. Geog. Surv. W. 

 lOOtb Mer. 1878, 191 : Tujoma rhinichthijoides Cope, Hayden's Geol. Surv. Mont. 1871, 

 473: Apocope coiiesi Yarrow, vol. v, Zool. U. S. Geog. Surv. W. 100th Mer. 1876, 648.) 



32S. A. llCUSliai'ii Cope. 



Body rather elongate. Muzzle rather long, broad, obtuse, but over- 

 hanging the mouth. Barbel small. Eyes small, high up, shorter than 

 snout. Ventral fins reaching anal, but not reached by the pectorals ; 

 dorsal fins originating somewhat behind base of ventrals. Color pale, 

 with a few dark clouds on the sides and dark shades on head ; lower 

 fins red at base; young with dark cross-streaks. Head 4i; depth 4i. 

 D. 0; A. 7; scales 14-G2-10; teeth 1, 4-4, 1. Utah and Idaho; abun- 

 dant in Provo Eivcr. Not very different from the preceding. 



(^Bhinichthys henshavii Cope, Proc. Amer. Phil. Soc. Phila. 1874, 133 ; Cope, vol. v, 

 ZooL U. S. Geog. Surv. W. 100th Mer. 645.) 



